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प्रश्न
Tick (√ ) the most appropriate answer.
Galvanising is the process of coating iron with a layer of molten :
विकल्प
zinc
tin
copper
silver
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उत्तर
zinc
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संबंधित प्रश्न
What do you observe when Magnesium is heated and then tested with moist blue and red litmus – paper?
What is rust ?
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In the laboratory preparation of oxygen from hydrogen peroxide answer the following:
Name the catalyst used in the preparation and state it’s function.
In the laboratory preparation of oxygen from hydrogen peroxide answer the following:
State the word equation for the reaction involving the above preparation of oxygen.
Distinguish between:
Combustion and Respiration
Match the following
| 1. | Burning of meteors | a. | Exosphere |
| 2. | Weather change | b. | Stratosphere |
| 3. | Lowest temperature | c. | Mesosphere |
| 4. | Ozone layer | d. | Troposphere |
